Andje wrote:Just making sure, but for a 168v Meanwell setup, you would need a 135v zener to drop it down to under 35v?
I don't think they make one that goes that high do they?
If you are planning to put several supplies in series to make 168V, then the zener should be sized for the single supply that it will be attached to. For more than 3 supplies in series, you may need to put limiter boards on more than one supply. One limiter for every two supplies in series should give enough compliance range to avoid problems.
If they DO make a supply that goes that high, the zener will need to dissipate quite a bit of heat, so 1W may not be enough.
Let me know your configuration.